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				 Google's Chrome and Mozilla's Firefox are some 
				of the world's most widely used browsers, and the moves could 
				disrupt users accessing a broad range of Chinese web sites. 
				 
				As a result of Mozilla's step, users of Firefox may get a 
				warning when attempting to visit sites certified after April 1 
				by the China Internet Network Information Center (CNNIC), the 
				body that administers China's Internet by allocating and 
				certifying IP addresses and web domain names. 
				 
				CNNIC issued a statement on Thursday calling Google's move 
				"unacceptable and unintelligible" and asked the web giant to 
				consider its users' interests. 
				 
				Zhang Jing, a representative of CNNIC's media relations 
				department, could not immediately provide comment about 
				Mozilla's move when reached late Friday. 
				 
				Mozilla and Google have both objected to CNNIC delegating its 
				authority to issue certificates to an Egyptian company called 
				MCS Holdings, which mishandled the matter last week. 
				 
				MCS Holdings attributed a security lapse that took place on a 
				test network to human error. 
				 
				Internet authorities around the world issue certificates of 
				trust to websites to verify their authenticity when visited by a 
				web browser. Hackers could in theory impersonate unverified 
				websites and intercept data using a "man-in-the-middle" attack. 
				 
				Google and Mozilla have said they would allow CNNIC to reapply 
				so its certificates could be recognized again. 
				 
				Chrome is the world's most popular desktop and tablet browser, 
				with nearly 50 percent share, while Microsoft Corp's Internet 
				Explorer has nearly 18 percent compared to Firefox at 16.9 
				percent, according Statcounter. 
				 
				(Reporting by Gerry Shih) 
				
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